Process of shearing glass mosaics of irregular shapes.



- No.1v9127. PATENTED JUNE'S,y 1905.

. l P. SBMMBR. S Y PROCESS 0F SHEARING GLASS MOSAIGS of' IRREGULAR SHAPBS.

APPLICATION FILED DEO. 2K4, 1903. 1

, UNITED STATES PATENT OFFICE,

PHILLIP SEMMER, OF PITTSBURG, PENNSYLVANIA.

PROCESS oF SHI-:Amine GLASS MoSAloS oF IRREGULAR SHAPES.

SPECIFICATION forming part of Letters Patent N0. 791,827, dated June 6, 1905.

Application led December 24:, 1903. Serial No. 186,419.

To all whom t may concern:

Be it known that I, PHILLIP SEMMER, a citizen of the United States, residing at Pittsburg, Y

in the county of Allegheny and State of Pennsylvania, have invented certain new and useful Improvements in Processes of Shearing Glass Mosaics of Irregular Shapes; and I do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

Ihis invention relates to an improved process for shearing glass mosaics of irregular shape.

In the treatment of mosaics for imparting to the same irregular shapes to adapt them for use in artwork it has been customary to cut the mosaic with a diamond or other suitable glass-cutter to the required design and then to break or chip off the edges outside of the line of cut. This breaking is accomplished by exerting pressure on the edges; but the separation is distinctively a break, and

consequently no clean and even line of sepax ration takes place. The mosaic i's frequently crushed under the pressure, and in many instances the design cut by the diamond is not followed, but the mosaic breaks on lines not intended.

It is therefore the object of the present invention to provide a process whereby the objections noted may be overcome and by the employment of which the mosaics may be cleanly and effectually cut or sheared in contradistinction to breaking or chipping.

With these general objects in view and others, which will appear as the nature of the improvements is better understood the invention consists, substantially, in the `novel process hereinafter fully described, illustrated in the accompanying drawings, and pointed out in the appended claim.

In the drawings, Figure 1 is a view in elevation of a hand-tool for practicing the present invention. Fig. 2 is a sideelevation, partly in section, of a machine for practicing the process by power.

the purpose of which is to attack the edges of the mosaic (designated by 5) at successive points, but with a shearing action, and not to permit all parts of the edges to engage the mosaic simultaneously. Thus it will be seen that when the tool described is operated by hand the cutters 4 thereof may be caused to engage the edges of the mosaic, and by shearing such edges the mosaic may be cleanly cut to the desired configuration and in a quick and easy manner. Furthermore, liability of the mosaic being fractured, as is commonly the case in the methods ordinarily employed where breaking prevails, is reduced to a minimum.

As shown in Fig. 2, the process. may be practiced by power, and, referring to this figure, the numeral 6 designates the table of the machine for supporting the mosaic 7, the latter being fed over the table 6 through the medium of an endless band 8, this .feeding advancing the mosaic 7 to the shearing action of a rotating cutter 9, journaled upon a suitable axis 10 and including a series of cuttingblades 11, arranged in a substantially spiral manner in order to act upon the mosaic 7 withv a shear cut. The blades 11 coact with the edge of the table 6 to shear the -edges of the mosaic 7 in a manner, as is clearly apparent.

From the foregoing vit will be seen that the herein-described process enables mosaics being cut by a shearing action in contradistinction to breaking or chipping off the edges, and consequently a clear and even line of separation takes place, thus preventing crushing of the mosaic.

Patented June 6, 1905.

Having thus described the invention, what ing action upon the glass, whereby an indiis claimed as new, and desired to be secured by Vidual mosaic is obtained after each cut. IO Letters Patent, isn 1 In testimony whereof l afx my signature in In the art of producing mosaic art-shades the presence of two witnesses. 5 and the like, the process for the formation of PHILLIP SEMMER.

glass mosaics of irregular shape, which coni Witnessesz sists in subjecting the glass from which the HENRY E. COOPER, mosaics are produced to cuts having a shear- FANNIE R. FITToN. 

